public void CheckInTest()
        {
            // TODO: add unit test for the method 'CheckIn'
            TransactionCheckin checkinContract = null; // TODO: replace null with proper value
            var response = instance.CheckIn(checkinContract);

            Assert.IsInstanceOf <Transaction> (response, "response is Transaction");
        }
 public void Init()
 {
     instance = new TransactionCheckin();
 }